United AirlinesUA80% on time
Flights UA6214 08:00 daily · UA6243 12:05 daily · UA6160 14:40 Mo We Th Su · UA4425 16:30 daily
live
Direct flights from Houston (IAH) to St Louis (STL): 32 nonstop departures observed each week across 1 airline. 80% of the last 5 tracked flights arrived within 15 minutes of schedule. The median arrival is 16 minutes early. 1 of the 6 tracked flights was cancelled. The nonstop covers 1,076 km, an estimated 1 hour 53 minutes in the air. Measured by Pro Flight Search from live flight boards at Houston and St Louis. Updated 15 November 2026 at 11:27 UTC.
Today, IAH → STL
Sun 15 Nov · local times- 08:00 UA6214United On scheduleGate C34 · TC ·
- 12:05 UA6243United On scheduleGate A8 · TC ·
- 14:40 UA6160 On scheduleGate B53 · TC ·
- 16:30 UA4425United On scheduleGate B65 · TC ·
- 20:20 UA2804United Sched 20:20Departure not confirmed by the board ·
Checked IAH board 05:27 · STL board 22:18
IAH
Houston
disrupted · +235
STL
St Louis
disrupted · +101
1,076 km · ~1h 53m est.
Runs reliable · 1 airline · 32x weekly · nonstop
80% on time
of the last 5 tracked IAH → STL flights arrived within 15 minutes
Median arrival delay is −16 min. 1 of 6 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →
Median arrival−16 minacross the last 4 arrivals
Flight time~1h 53mestimated from route distance
Weekly departures32x1 direct airline on the leg
The week
scheduled departures · origin local time06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
United Airlines
Each mark is a scheduled departure at its origin-local time, observed operating in the last 7 days. Today is highlighted.
Who flies it
observed on the boards · 7 daysHistory
operated legs · board outcomesActual board outcomes rather than schedules, paired departure and arrival per flight and day.
Full board history, day by day →
Airports right now
live boardsWeather lens
Conditions are tightest at STL: a 33% chance of a 15+ minute delay. In this weather, the more delayed of the two airports is typically about +8 min. Both figures come from the two airports' delay records in similar weather. See live delays → · Weather risk by airport →
next sweep in 120s
How the Houston to St Louis route actually runs
Pro Flight Search records official board updates for nonstop IAH to STL flights through the day: schedules, estimates, gate pushes and actual departures. The verdict above comes from operated flights, so it reflects what this route does rather than what the timetable promises.
Planning around a delay? Live airport delays · Weather delay risk map · Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
Cite this data
Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.
Suggested citation
Pro Flight Search: Houston (IAH) to St Louis (STL) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/IAH-STL
IAH to STL questions
Is IAH–STL running on time right now?
High disruption likely. Both endpoints currently score the same, route health score 0/100. The airports section above carries the live status and delay window at both ends.
Morning or evening flight on IAH–STL?
Operators schedule morning departures around 08:00 and evening departures around 20:20 from IAH. Earlier flights typically land before destination-airport delays accumulate later in the day; check the STL delay card to confirm conditions when you'd arrive.
How long is the flight from IAH to STL?
Great-circle distance is 1,076 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 106–122 min gate-to-gate on this route.
How often does IAH–STL fly?
United Airlines runs the route with about 32 flights a week (daily). Since one carrier owns the route, a single disruption tends to ripple through the day.
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